Valve-seat puller



- M- SMITH VALVE SEAT FULLER Filed July 1 25 Patented Sept. 7,1926.

* UNlTEDr STATES PATENT-V OFFICEQ GEORGE B. M, SMITH, OF TORRANCE,CALIIFQRNIl-Lv (VALVE-SEAT 'rUnLEn.

Application filed July 16, 1925. Serial No. 44,095.

My invention relates to valve-seat pullers.

and the general object 'thereof'is to provide a simple device foreiiectively pulling worn valve seats, such as used in water pumps orslush pumps, without injuring the pump in any way. i

A more particular object is to provide a valve-seat puller of thecharacter stated operable by pressure, such as the pressure of a screw.

A further object is to provide a hand gripfor conveniently and readilyopening and closing the jaws of a valve-seat puller.

The invention consists in the featuresof construction, combination ofelements, and arrangement of parts hereinafter described and pointed outin lillefilttlllls.

Referring to the annexed drawing in which my invention'is illustratedand which their upper ends in grooves 5 in the ends of the cross-head '2on pivots 6. The lower ends of the jaws 8 are formed with shoulders 7 ontheir outer edges. Handles 8 are formed. on the upper ends of the jaws 3for swinging the jaws open or-closed. The base 1 is provided with arecess 9 in its upper side having a spherical bottom or seat 10 intowhich recess extends the lower end portion 11 of the screw 1, the lowerextremity'of which end portion is spherical and rests upon the sphericalseat 10. Said lower end portion has an annular groove 12 therein toreceive the end of a set-screw 13 seated in the base 1 whereby the lowerend ofthe screw is turnably connected to said base.

The base 1 is formed with a pair of wings 14 on opposite sides thereof,one ofwhich wings extends over one side of one jaw 3 while the otherwing extendsover the other side ofthe other jaw, whereby the base 1 isprevented from turning with the screw 1. e

The screw 4; extends through the crosshead 2 betweenthe jaws 3 and is inthreaded engagement with said cross-head. A flat-f sided head 15 isformed on the upper end ofthe screw 1 to receive a 'wrench 16for-turning' the screw.

To pull a valve seat as indicated at 20, with my puller, the handles 8are first pressed outwardly and the jaws 3 swung towards each other; thejaws are then introduced through the seat until the base 1 rests uponthe top 21 of the pump 22; the handles 8 are then pressed inwardly untilthe jaws engage the inner surface of the seat with v the shoulders 7 ofthe jaws underneath the lower edge of the seat; the screw l is thenrotated by means of the wrench 16 which applies an upward pressure uponthe jaws, and the engagement of the lower-edge of the seat by the jawshoulders 7 draws the seat upwardly, thus pulling the seat.

I claim 1. A valve-seat puller comprising a crosshead, a screw inthreaded engagement with said'cross-head, a base to which the lower endof the screw is turnably connected, said base being adapted to rest uponthe top of a pump, and a pair of jaws pivoted to said cross-head to beintroduced through a valve seat, said aws lncluding shoulders forengaging the lower edge of sald seat.

2. A valve-seat puller comprising a crosshead, ascrew seated in saidcross-head, a base to which the lower end of the screw 1s 'turnablyconnected, said base being adapted treinity adapted to fit in saidrecess with said spherical extremity resting upon said lower sphericalwall, said end portion having an annular groove, a set-screw in saidbase engaging said groove, a cross-head in which said screw is seated,and a pair of jaws pivoted to said cross-head to be inserted through avalve seat and formed with shoulders for engaging the lower edge of saidseat.

In testimony whereof I hereunto affix my signature.

GEORGE B. M. SMITH.

